P0311- Air Suspension fault code
 

Duramertic shows 0311 - Tyre Filling connection short circuit to ground. Was replacing the PSM module under the seat along with the stepper motor to fix the 4 wheel drive fault. Fixed that but when I was taking the air compressor connection lose or when I was lifting the seat (which I know now I did not need to do) I think something broke. The ride height adjustment does not work and I get the air suspension warning. After that goes away the small ride height warning remains. I do not have the air hose that connects to the connector or more importantly the Pin outs for the plugs to the Tyre filling connection to test as they specify in the workshop manual. So is it the tyre filling valve and plug, waring harness or control module.
2005 Cayenne Turbo